22 J- M. Macfarlane. — Sarraceniaceae. 



sheets to herbaria. In 1905 the writer saw abundance of this hybrid (already named 

 S. Mandaiana), along with its parents near Bay Minette, Ala. , and he then secured a 

 few hybrids of S. Drummondii with S. purpurea, as well as the hybrid first treated 

 of above. He has also received from S. E. Georgia a hybrid between S. minor and 

 S. psittacina, and Harper has recorded this from four counties in Georgia. Curiously 

 enough, though the writer has explored many miles of territory in which S. purpurea 

 and S. psittacina grew side by side in great abundance, he has failed to note even one 

 example of the hybrid. But this is already well known in cultivation as S. Courtii, 

 and has originated in at least three botanical establishments. Finally at Ponce de Leon a 

 plant was obtained .that in pitcher and floral structure proved to be S. flava X S. pur- 

 purea, and recrossed by S. flava. The pitchers greatly resembled those of S. flava 

 but incolor and shape the flowers showed marked traces of the other parent. 



Fruit and Seed (Frucht und Samen). The maturing capsules, in all species of 

 the group, are surrounded by the persistent sepals and by the bracts, where these 

 are elose to the flower. At first inverted the capsules may remain so, as in S. psitta- 

 cina, S. Sledgei, etc., or they may become transverse or nearly upright as in S. flava, 

 or quite erect as in Darlingtonia. Capsular dehiscence is loculicidal. The yellow 

 glistening capsule of Heliamphora when ripe, breaks apart from above downward into 

 three segments, to one of which the persistent thread-like style adheres. The dehis- 

 cence is similar for the five yellow segments of Darlingtonia. In Sarracenia the five 

 yellow-brown or brown segments of the almost spherical capsule, remain adherent by 

 the common axial substance that is prolonged into the persistent style base, and de- 

 hisce longitudinally along their external or dorsal sutures. The period for maturation 

 of the capsule of Sarracenia is four to five months. The nectariferous tubercles of 

 the ovarian wall are faintly observable in the mature fruit of Darlingtonia, but are 

 conspicuous in Sarracenia. In S. flava and S. Sledgei they form deep irregulär knob- 

 like plates, in S. purpurea isolated papillae, in the other species irregulär tubercles 

 of varying size. 



The seeds of Heliamphora (Fig. %F) and Darlingtonia (Fig. 7(7,D) show a suggestive 

 approach to those of Nepenthes in position and structure, since the testa is expanded 

 into a membranous wing in the former, and into an attenuate c'äudate process, whose 

 surface is covered by blunt unicellular hairs, in the latter. The grey-yellow or flesh 

 colored testa in Sarracenia is warted and ridged (Fig. $F). It consists -of a columnar 

 layer of indurated cells with pore canals, and whose walls are here and there elevated 

 into tubercular swellings. The cavities are filled with a dense oily substance. A second 

 layer of transversely elongated cells with thickened outer walls but thin lateral and 

 internal walls, contains also dense oily contents. Succeeding these are 2- — 3 thin 

 flattened layers of tegmen that Surround the endospermic albumen. The albumen cells 

 are rounded and filled with oil and angular protein grains. The small embryo has 

 a short radicle, two elongated cotyledons, and a minute plumule. On g'ermination the 

 radicle first protrudes and lengthens, the linear cotyledons next elongate, become green, 

 and appear outside the seed. Their tips remain colorless for a considerable time and 

 absorb the albumen. As they elongate the seed coat is pushed upward, one of the 

 cotyledons next disengages itself, and the seed coat remains hoisted on the tip of one 

 cotyledon for a short time. Subsequent changes have already been described. 



Geographica! Distribution (Geographische Verbreitung). The genus Heliam- 

 phora is only known to occur round and on the precipitous Mount Roraima between 

 British Guiana and Venezuela. First encountered by the brothers Schomburgk, and 

 stated by Richard S. (Reisen in Brit. Guiana III. [1848] 1090) to occur "am süd- 

 lichen Abhänge des Roraima in einer Meereshöhe von 6000'", it was afterwards collect- 

 ed and introduced into cultivation by Burke. More recently it has been traced from 

 the base to the mountain summit by E. Im Thurn , who says that "it grows in wide 

 spreading very dense tufts in the very wettest places, but where the grass happens 



